Perfect – if slower

Greetings,
If we could slow slidenswap down to 5% of its current speed it would be perfect!
See this page: https://prpnm.com/?page_id=1065

The left one is slidenswap which is too fast. The right one is wdslider which is an okay speed but too choppy. IS there any way to use slidenswap but slower with no choppiness? We can use high-res images.

Thanks!

https://ww.wp.xz.cn/plugins/slidenswap-gallery/